The world’s population is getting larger and larger, so scientists are trying to new ways to solve the food shortage.
A. keep up with
B. e up with
C. make up with
D. catch up with
网友回答
A. keep up with
(答案→)B. e up with
C. make up with
D. catch up with
解析：keep up with赶得上，和……保持联系；e up with提出，想出；make up with与……重修旧好；catch up with赶上，追上。句意：世界的人口数目正在变得越来越大，因此科学家们正在努力想新办法来解决食物短缺问题。结合语境可知选B。